Craig Unger, author of 'The Fall of the House of Bush,' and 'New York' writer Jennifer Senior discuss who won the debate (according to a novel measure), a potential missed opportunity for Obama on the economy, and what kind of president Obama might make — and whether anyone even knows him well enough to say.

'National Review' correspondent Byron York and Craig Unger, author of 'The Fall of the House of Bush,' discuss McCain's challenge at tonight's debate, whether the race holds any surprises, and how Obama resembles Bush in his response to the financial crisis.

'Rolling Stone' columnist Matt Taibbi and 'National Review' correspondent Byron York argue over the headwinds facing McCain, what Phil Gramm had to do with the financial crisis, and the importance of credit default swaps.